斷面裂紋 的英文怎麼說
中文拼音 [duànmiànlièwén]
斷面裂紋
英文
section crack-
The method for measuring the plane strain fracture toughness klc has been introduce to high polymer bonded explosives ( pbx ) by systematically studying technologies concerning the shape of specimen, the depth and its machining of crack, the loading rate, the measurement of critical fracture load, and the computation of klc, etc. the method has been used to test and study klc of three typical high polymer bonded explosives which are j2, jl, j3 respectively both at normal temperature and unmoral temperature
本文以高聚物粘結炸藥為研究對象，對測試高聚物粘結炸藥的平面應變斷裂韌度所涉及的樣品形狀、裂紋深度及裂紋制備、加載速度、臨界斷裂載荷p _ q的確定及平面應變斷裂韌度k _ （ ic ）的計算等方面進行深入研究，建立了較為完善的炸藥平面應變斷裂韌度測試方法。Because the propellant grain is viscoelastic material, the liner and adiabatic layer are also viscoelastic one, the interface debond problem is actually interface crack about elastic - viscoelastic or bi - viscoelastic materials. research about this problem relates to the knowledge of viscoelastic mechanics and interface fracture and combustion. numerical analysis method about interface debond on solid rocket motor is researched in this paper
由於固體火箭發動機的推進劑藥柱是一種粘彈性材料，襯層和絕熱層也具有粘彈性性質，因此其界面脫粘問題實際上是彈性-粘彈性或雙粘彈性各向同性材料界面裂紋問題，對該問題的研究涉及到粘彈性力學、界面斷裂力學和燃燒學等相關學科。By means of the transformation from the focal coordinate system to the observation system, we obtained the external normal vector of the focal fault plane expressed in its observation system, and obtained the macrodamage degree of the researched block, which is calculated in dyadic
由震源坐標系表示的震源斷層面換算到觀測坐標系得到其外法向矢量，可求得研究地塊以地震裂紋密度張量計算的宏觀損傷度的變化。Rubber components often appear interface failure due to the actions of mechanical loads and the influences of enviorment. hence, in this paper the interface failure mechanism has been studied by means of finite element method and fracture machinics. the numerical results of testpieces deformation with crack are in close agreement with experimental values
橡膠鋼雙材料試件由於機械載荷和環境的影響經常在粘接界面發生破壞而導致結構失效，藉助有限元和斷裂力學對界面破壞機理進行研究，得到的存在初始裂紋的試件變形與實驗結果吻合較好。A segment of the box corner was removed with a hole saw in order to permit an examination of the crack.
為了對裂紋進行檢查，用圓孔鋸從箱型斷面拐角處鋸下一部分。Analyzing the propagation behaviors for open and close crack, the author gain that normal fault is more dangerous to earthquake than reverse fault and glide fault. 3. appling fracture mechanics to discuss reservoir - induce earthquake mechanism, the author observes the characteristic of surface crack and gains the stress intensity factor induced by the pressure of rock, water and osmosis
針對庫區斷層為表面裂紋這一特點，研究水庫地震的斷裂特點，得出地應力作用下的應力強度因子、庫水作用下的應力強度因子和滲壓作用下的應力強度因子以及它們的應力強度因子之合，並且合理的解釋了構造型水庫地震的誘發機理。In the view o6f micro mechanics and fracture mechanics, the mechanism of crack generation of mass concrete is expatiated, thermal stress on the interface between aggregate and cement paste of concrete and crack forming and developing is analyzed and the disciplinarian crack developing with temperature is given
本文從微觀力學和斷裂力學的角度，探討了混凝土結構開裂機理，分析了溫變過程中混凝土骨料與水泥砂漿界面上的溫度應力以及界面裂紋的萌生和擴展，給出了裂縫隨溫度變化的擴展規律。Using the complex potential method in the plane theory of elasticity of an anisotropic body, a series solution to the stress field of a finite plate containing multiple cracks subjected to arbitrary loads is obtained by means of the faber series expansion, and the stress intensity factors at the crack tips are calculated based on the theories of fracture mechanics. equivalence yield stress is introduced in order to consider the effects of the plastic zones, with which the strip yield criteria is developed in the article so that the effects of structural size and the crack interactions on the stress distribution can be considered accurately. the effects of plate size, crack size and crack distributions on the stress intensity factors as well as the residual strength of the plate are studied detailedly
採用各向異性體平面彈性理論中的復勢方法，以faber級數為工具，得到了含多裂紋有限大板在任意載荷作用下應力場的級數解，並應用斷裂力學方法確定裂紋尖端的應力強度因子；引入當量屈服應力考慮裂尖塑性區的影響，提出基於帶屈服準則的剩餘強度分析模型，能夠充分考慮結構尺寸和裂紋之間相互作用對應力場的影響；通過數值計算詳細討論了結構尺寸和裂紋之間位置關系對應力強度因子和結構剩餘強度的影響規律，得到了一系列對工程應用具有實用價值的結論。The pavement panel, under load and with already existing initial cracking & inherent damaged conditions as well as its cracks & damage, further accumulates and expanses, which lays a foundation for the fissures & breakage ; the surface layer - as the uneven pavement brings about interaction between spring plates which results in impact on the vehicle load, is the main reason speeding up the fissures in the pavement panel
在荷載作用下，使得已經存在初始裂紋和固有損傷條件的路面板，其裂縫和損傷進一步累積和拓展，為路面的斷裂破壞奠定了基礎；表面層? ?由於路面表面的不平整而引起的車板相互作用帶來車輛運動荷載的沖擊，是加速路面板斷裂的主要原因。The vickers hardness decreases monotonously from ~ 20gpa ( ai2o3 ) to ~ 14gpa ( 19vol. % ni - fe / al2o3 ) with increasing ni - fe content
並結合表面裂紋擴展和斷口形貌，討論了材料增強增韌的機理。Studying the rule of geometric shape of surface crack during propagation by means of fracture mechanics theory, a predicting method of fatigue crack propagation life and it ' s numerical calculation theory are presented
本文應用斷裂力學理論，對焊接鋼結構表面裂紋擴展過程中裂紋幾何形狀的變化規律進行了探討，提出了疲勞裂紋擴展壽命的預測方法，給出了相應的數值計算理論。Unknown displacement jumps in the equations are approximated with the products of the fundamental density functions and polynomials, in which the fundamental density functions are expressed with exact solutions of the two - dimensional interface cracks due to axial - symmetries of the problems herein
方程中的未知位移間斷近似表示為基本密度函數與多項式之積，其中基本密度函數考慮到問題的對稱性用二維界面裂紋精確解表示。Aiming at the simulation of quasi - brittle fracture of concrete - like materials, the qualitative comparison of the selected models was focused on the follow aspects, i. e. the simulation of the fracture behaviors of crack mode and crack mode by use of the selected models and the simulation of dilatancy properties of the selected models under mixed - mode fracture loading conditions
在對選擇的典型黏性界面裂紋進行定性分析比較時著重考慮以下兩點：採用選擇的模型對型裂紋和型裂紋的斷裂行為進行數值計算；對混合型斷裂載荷作用下模型的擴容行為特性進行數值分析。Calculating example shows that the fracture parameters of viscoelastic interface crack have a time correlation behave, its extend is a kind of delay instability
計算表明，粘彈性界面裂紋的斷裂參量表現為時間相依性，粘彈性界面裂紋的擴展一般為延遲失穩。The cumulative damage modes and their distribution regions on 7t / 4 quasi - isotropic laminates were reasonably simulated and the predicted fatigue lives agree well with the test results. residual strength evaluation is playing a significant role in damage tolerance analysis of structures. chapter 4 describes a simple procedure for the evaluation of residual strength of metallic structures with cracks developed b
提出按剩餘西北工業大學博士學位論文:飛機結構疲勞和斷裂分析中若干問題的研究強度等效和按疲勞壽命等效兩種途徑將撞擊損傷當量化為表面裂紋，並根據有限的試驗結果進行了嘗試，得到了一些初步結果。This paper presents a method to calculate elastodynamic fracture parameters of surface crack by using the elastic line - spring model combined with perfect ansys software. the main content includes : the traditional line - spring model which is used in the static analysis of surface crack is extended to the dynamic case, the corresponding constitutive relations are derived and combined with the software ansys, and then the corresponding computational technique is formulated
本文將線彈簧模型與有限元軟體ansys相結合，對彈性表面裂紋的動態斷裂參量進行了研究，所進行的工作主要有：將傳統的用於靜態表面裂紋分析的線彈簧模型推廣用於動態斷裂分析，導出了相應的線彈簧本構關系，並與有限元（ ansys ）相結合，建立了相應的求解技術。The condensation method is used to form a super interface element. examples indicate that the
算例表明該方法能很好的用於粘彈性界面裂紋的斷裂分析。At the same time, bem formulae for interface crack analysis of thermal barrier coated structures are given in this paper. the method to evaluate nearly - singular integrals over crack tip elements and the formulae for calculating stress intensity factors ( sif ) using open and slip displacements on crack faces are presented too
基於邊界元法、斷裂力學等基本理論，本文導出了帶熱障塗層構件界面裂紋的斷裂特性分析邊界元法公式；結合先進的近奇異積分技術處理裂尖元的近奇異積分，利用位移法計算層間界面裂紋的應力強度因子。Numerical simulation of the quasi - brittle fracture behaviors with the selected models was carried out at local constitutive level
在局部本構水平上，採用這些界面裂紋本構模型，對各種載荷工況下材料的準脆性斷裂行為進行數值模擬。Standard test method for surface - crack fracture toughness kle of metallie plates
金屬板材表面裂紋斷裂韌度kie試驗方法分享友人